<template>
<div>
  <!-- 面包屑导航区 -->
  <el-breadcrumb separator="/">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>参数列表</el-breadcrumb-item>
  </el-breadcrumb>

  <!-- 卡片视图 -->
  <el-card>
    <el-alert show-icon :closable="false" title="注意：只允许为第三级分类设置相关参数！" type="warning"></el-alert>
    <!-- 选择商品分类区域 -->
    <el-row class="cat_opt">
      <el-col>
        <span>选择商品分类：</span>
        <!-- 级联选择框 -->
        <el-cascader
        v-model="selectedCateKeys"
        :options="catelist"
        :props="{ expandTrigger: 'hover',...cateParops}"
        @change="handleChange"></el-cascader>
      </el-col>
    </el-row>
    <!-- Tab选择卡 -->
    <el-tabs v-model="activeName" @tab-click="handleClick">
      <!-- 添加动态参数的面板 -->
    <el-tab-pane label="动态参数" name="many">
      <el-button type="primary" @click="addDialogVisible=true" :disabled="isBtnDisabled" size="mini">添加参数</el-button>
      <!-- 动态参数表格 -->
      <el-table :data="manyTableData">
        <el-table-column type="expand">
          <template v-slot="scope">
            <!-- 循环渲染tag -->
            <el-tag @close="handleClose(index,scope.row)" closable v-for="(item,index) in scope.row.attr_val" :key="index">
              {{item}}
            </el-tag>
            <el-input
              class="input-new-tag"
              v-if="scope.row.inputVisible"
              v-model="scope.row.inputValue"
              ref="saveTagInput"
              size="small"
              @keyup.enter.native="handleInputConfirm(scope.row)"
              @blur="handleInputConfirm(scope.row)"
            >
            </el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="参数名称" prop="attr_name"></el-table-column>
        <el-table-column label="操作">
          <template v-slot="scope">
            <el-button @click="showEditDialog(scope.row.attr_id)" type="primary" size="mini" icon="el-icon-edit">编辑</el-button>
            <el-button @click="removeParams(scope.row.attr_id)" type="danger" size="mini" icon="el-icon-delete">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-tab-pane>
      <!-- 添加静态属性的面板 -->
    <el-tab-pane label="静态属性" name="only">
      <el-button type="primary" @click="addDialogVisible=true" :disabled="isBtnDisabled" size="mini">添加属性</el-button>
      <!-- 静态参数表格 -->
      <el-table :data="onlyTableData">
        <el-table-column type="expand">
          <template v-slot="scope">
            <!-- 循环渲染tag -->
            <el-tag @close="handleClose(index,scope.row)" closable v-for="(item,index) in scope.row.attr_val" :key="index">
              {{item}}
            </el-tag>
            <el-input
              class="input-new-tag"
              v-if="scope.row.inputVisible"
              v-model="scope.row.inputValue"
              ref="saveTagInput"
              size="small"
              @keyup.enter.native="handleInputConfirm(scope.row)"
              @blur="handleInputConfirm(scope.row)"
            >
            </el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="属性名称" prop="attr_name"></el-table-column>
        <el-table-column label="操作">
          <template v-slot="scope">
            <el-button @click="showEditDialog(scope.row.attr_id)" type="primary" size="mini" icon="el-icon-edit">编辑</el-button>
            <el-button @click="removeParams(scope.row.attr_id)" type="danger" size="mini" icon="el-icon-delete">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-tab-pane>
  </el-tabs>
  </el-card>
<!-- 添加参数的对话框 -->
  <el-dialog
  @close="addDialogClosed"
  title="添加"
  :visible.sync="addDialogVisible"
  width="50%">
  <!-- 添加参数对话框 -->
 <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="addForm.attr_name"></el-input>
  </el-form-item>
 </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
</el-dialog>

<!-- 修改参数对话框 -->
 <el-dialog
  @close="editDialogClosed"
  title="修改"
  :visible.sync="editDialogVisible"
  width="50%">
  <!-- 添加参数对话框 -->
 <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="editForm.attr_name"></el-input>
  </el-form-item>
 </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams">确 定</el-button>
  </span>
</el-dialog>


</div>
</template>

<script>
export default {
  data() {
    return {
      addForm:{},
      // 动态参数的数据
      manyTableData:[],
      // 静态参数的数据
      onlyTableData:[],
      // 商品分类列表
      catelist:[],
      // 级联选择的配置对象
      cateParops:{
        value:'cat_id',
        label:'cat_name',
        children:'children'
      },
      // 级联选择框双向绑定的数组
      selectedCateKeys:[],
      activeName:'many',
      // 添加对话框的显示和隐藏
      addDialogVisible:false,
      // 验证规则对象
      addFormRules:{
        attr_name:[
           { required: true, message: '请输入参数名称', trigger: 'blur' },
        ]
      },
      // 控制修改对话框显示隐藏
      editDialogVisible:false,
      // 修改的表单数据对象
      editForm:{},
      // 修改的表单验证对象
      editFormRules:{
        attr_name:[
           { required: true, message: '请输入参数名称', trigger: 'blur' },
        ]
      },
     
    }
  },
  methods: {
    async getParamsDate(){
      const {data:res} = await this.$http.get('categories')
        
      if(res.meta.status!==200)
      return this.$message.error('获取商品分类失败')
      this.catelist = res.data 
    },
    async handleChange(){
     /*  if(this.selectedCateKeys.length!==3){
        this.selectedCateKeys=[]
        return
      } */
      const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}})
      res.data.forEach(item=>{
        
        item.attr_val = item.attr_vals.split(' ')[0]==''?[]:item.attr_vals.split(' ')
        // item.attr_val.pop()
        // 为没一行数据添加自定义属性
        item.inputVisible=false
        item.inputValue=''
      })

      // console.log(res.data)
      if(res.meta.status!==200)
      return this.$message.error('获取数据失败')
      if(this.activeName==='many'){
        this.manyTableData = res.data
      }else{
        this.onlyTableData=res.data
      }

    },
    handleClick(){
      this.handleChange()
    },
  // 关闭事件
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮
    addParams(){
    //  console.log(this.cateId,this.addForm.attr_name,this.activeName)
      this.$refs.addFormRef.validate(async valid=>{
        if(!valid) return
        const {data:res} =await this.$http.post(`categories/${this.cateId}/attributes`,{
          attr_name:this.addForm.attr_name,
          attr_sel:this.activeName
        })
        console.log(res)
        if(res.meta.status!==201){
          return this.$message.error('添加参数失败')
        }
        this.$message.success('添加参数成功')
        this.addDialogVisible=false
        this.handleChange()
      })
    },
    // 编辑按钮展示对话框
    async showEditDialog(attr_id){
      const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,
      {params:{attr_sel:this.activeName}})
      if(res.meta.status!==200)
      return this.$message.error('获取参数失败')
      this.editForm=res.data
      this.editDialogVisible=true
    },
    // 编辑对话框的关闭事件
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    // 修改确定按钮
    editParams(){
       this.$refs.editFormRef.validate(async valid=>{
           if(!valid) return
           const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
           {attr_name:this.editForm.attr_name,attr_sel:this.activeName})
           if(res.meta.status!==200)
           return this.$message.error('修改失败')
           this.$message.success('修改参数成功')
           this.getParamsDate()
           this.handleChange()
           this.editDialogVisible=false
       })
    },
    // 删除按钮事件
    removeParams(attr_id){
      this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(async () => {
          const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`,)
          if(res.meta.status!==200)
           return this.$message.error('删除失败')
           this.handleChange()
          this.$message({
            type: 'success',
            message: '删除成功!'
          });
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });          
        });
    },
    // 文本框失去焦点或者enter
    async handleInputConfirm(row){
      if(row.inputValue.trim().length===0){
        row.inputValue=''
        row.inputVisible=false
        return
      }
      // console.log(row)
      row.attr_val.push(row.inputValue.trim())
      row.inputValue=''
      row.inputVisible=false
      // 发起请求
      const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
        attr_name:row.attr_name,
        attr_sel:row.attr_sel,
        attr_vals:row.attr_val.join(' ')
      })
      console.log(res.meta.status)
      console.log(row.attr_val.join(' '))
      if(res.meta.status!==200)
      return this.$message.error('添加参数失败')
      this.$message.success('添加参数成功')

    },
    showInput(row){
      row.inputVisible=true
      // 作用是 当页面上元素被重新渲染过后才会被执行
       this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
    },
    // 删除对应的可选项
    async handleClose(i,row){
      row.attr_val.splice(i,1)
      // 发起请求
      const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
        attr_name:row.attr_name,
        attr_sel:row.attr_sel,
        attr_vals:row.attr_val.join(' ')
      })
      console.log(res.meta.status)
      console.log(row.attr_val.join(' '))
      if(res.meta.status!==200)
      return this.$message.error('删除参数失败')
      this.$message.success('删除参数成功')
    }
  },
  computed:{
    isBtnDisabled(){
      if(this.selectedCateKeys.length!==3)
      return true
      return false
    },
    cateId(){
      // if(this.selectedCateKeys.length===3)
      return this.selectedCateKeys[this.selectedCateKeys.length-1]
      // return null
    },
    titleText(){
      if(this.activeName==='many')
      return '动态参数'
      return '静态属性'
    }
  },
  created() {
    this.getParamsDate()
  }
}
</script>

<style lang="less" scoped>
.cat_opt{
  margin: 15px 0;
}
.el-tag{
  margin: 10px;
}
.input-new-tag{
  width: 120px;
}
</style>
